venn diagram

circle a numbers:838,848,868,878
circle b numbers:403,509,600,702

What number would you write where the circles overlap?

juan says, "when you put together unequal groups, you can add. "is he correct? explain.

i think its yes because look i will do it right now 9 plus

To determine the number that belongs to the overlapping section of the Venn diagram, we need to identify the numbers that belong to both Circle A and Circle B.

From the given information:
Circle A: 838, 848, 868, 878
Circle B: 403, 509, 600, 702

Looking at the lists, we can identify that the number where the circles overlap is not explicitly provided. Therefore, there is no number that we can write in the overlapping section based on the given information.